A machinist , a turbo and his L31 GMC

Supercharged111 · Dec 22, 2016

Fuel is the easy part. Spark is where it gets time consuming, trial and error, etc. How does the Hollley tune for spark? Especially on a motor that never came with a knock sensor?

Mrich0908 · Dec 24, 2016

Supercharged111 said:
Fuel is the easy part. Spark is where it gets time consuming, trial and error, etc. How does the Hollley tune for spark? Especially on a motor that never came with a knock sensor?

My motor came with a knock sensor? I have 2 . The L31 has ever sensor the Ls1 had.
The holey doesnt tune spark only fuel. It has a program that takes two wide band 02 sensors . Matches your desired AFR to achieve optimal output.
Sparks easy for me , its fuel ,fuel ratios vs cold weather startups or warm. Stuff like that

Mrich0908 · Dec 24, 2016

Merry Xmas....

xc_hide_links_from_guests_guests_error_hide_media

Mrich0908 · Dec 27, 2016

Who knows where to get a gasket for the freeze out plug block heater?

michael hurd · Dec 27, 2016

Typically it is an O-ring. If you plan on trying to re-use one, I wouldn't.

A lot of times, people tighten the screw to the point where the retaining bar bends, then it can fail under high RPM and blow out.

Supercharged111 · Dec 27, 2016

Ya know, I could swear my 1500 had the factory block heater when I got it, but thinking back to all my wrenching I don't recall ever seeing it.

Mrich0908 · Dec 27, 2016

Ive always used mine. Especially with my new motor . its reduces allot of startup wear with forged motors.
Mines far from an o ring . The gasket is rubber and half a inverted radius . I know what the gasket is. Im trying to find a gasket for mine , that I use. I ripped mine draining water from the block to add antifreeze.
Ive looked every where I cant find a replacement.

Mrich0908 · Jan 2, 2017

Small update. I finally got around to verifying timing with a light today. Hp tuners has a function that allows you to add subtract or hold timing at said degree. I found out my timing was off a little under 30 degrees ruffly.
Explains why Ive been having so much trouble with my VE fuel tables . When it would advance 35 degrees it was really 5-8. Wow . Explains the occasional pop out the intake.
Then the RTV gasket I made for my block heater busted. Im just going to buy a new one with O-ring .

Mrich0908 · Jan 22, 2017

I actually made head way today. I still cant get my CMD offset pid to work but I re-stabbed the distributor and I know its really close this time. The camshaft low ses went out and the truck now starts up no problem, idles like a pro, revs to the moon , and makes a good amount of boost with out load.
This was a 3500 pull. I didnt have a 3.5inch turbo hose clamp. I was using a regular. Aint happen scared me.
I now feel confident in moving forward.

You must be registered for see images attach

Mrich0908 · Jan 23, 2017

O I bought a 96 burban 6.5l td other day. Needs allot of work clean interior and third row seat though.Starts right up. Now I have 2 to swap parts in between. The burban has all the heavy duty stuff. If I didnt just buy a stall and rebuild my 4l60e I would swap out the 80 4 the 60.
The 6.5 has a blown head gasket. Picked it up for 500. Ill grab pictures asap.

A machinist , a turbo and his L31 GMC

Supercharged111

Truly Awesome

Mrich0908

Pshhhhttttt!

Mrich0908

Pshhhhttttt!

Mrich0908

Pshhhhttttt!

michael hurd

Stalker be gone.

Supercharged111

Truly Awesome

Mrich0908

Pshhhhttttt!

Mrich0908

Pshhhhttttt!

Mrich0908

Pshhhhttttt!

Mrich0908

Pshhhhttttt!

Similar threads

Latest posts

Members online

Forum statistics

Share this page